Observations of the seasonality of the Antarctic microseismic signal, and its association to sea ice variability
International audience Seismic noise spectra at all seismic stations display two peaks in the 1-20 s period band, called primary and secondary microseisms. They are caused by the coupling of ocean waves into Rayleigh waves. At most locations, microseismic power is greater during local winter (when n...
Published in: | Geophysical Research Letters |
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Online Access: | https://hal.science/hal-00679388 https://hal.science/hal-00679388/document https://hal.science/hal-00679388/file/2011GL047525-pip.pdf https://doi.org/10.1029/2011GL047525 |
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ftsorbonneuniv:oai:HAL:hal-00679388v1 2024-09-15T17:45:45+00:00 Observations of the seasonality of the Antarctic microseismic signal, and its association to sea ice variability Grob, Mélanie Maggi, Alessia Stutzmann, Eléonore Géophysique expérimentale (IPGS) (IPGS-GE) Institut de physique du globe de Strasbourg (IPGS) Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Sismologie (IPGS) (IPGS-Sismologie) Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) 2011 https://hal.science/hal-00679388 https://hal.science/hal-00679388/document https://hal.science/hal-00679388/file/2011GL047525-pip.pdf https://doi.org/10.1029/2011GL047525 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2011GL047525 hal-00679388 https://hal.science/hal-00679388 https://hal.science/hal-00679388/document https://hal.science/hal-00679388/file/2011GL047525-pip.pdf doi:10.1029/2011GL047525 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-00679388 Geophysical Research Letters, 2011, 38, pp.L11302. ⟨10.1029/2011GL047525⟩ [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2011 ftsorbonneuniv https://doi.org/10.1029/2011GL047525 2024-07-25T23:47:33Z International audience Seismic noise spectra at all seismic stations display two peaks in the 1-20 s period band, called primary and secondary microseisms. They are caused by the coupling of ocean waves into Rayleigh waves. At most locations, microseismic power is greater during local winter (when nearby oceans are stormier) than local summer. This tendency is reversed for stations in Antarctica, where growth of local winter sea ice seems to impede microseism generation in near coastal areas. A decade of continuous data from coastal seismic stations in Antarctica show systematic seasonality in microseismic signal levels, and demonstrate associations with both broad‐ scale and local sea‐ice conditions. Primary microseisms are known to be generated at the coast and the modulation that we observe can be associated with sea‐ice variations both in the vicinity of the station and along other Antarctic coasts. The similar modulation of short‐period secondary microseisms corroborates their mostly near‐coastal origin, while the con- tinued presence of long‐period secondary microseisms sug- gests more distant source regions. These observations could be used to extend the monitoring of climate variability prior to the availability of satellite‐derived climate indicators. Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice HAL Sorbonne Université Geophysical Research Letters 38 11 n/a n/a |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes Grob, Mélanie Maggi, Alessia Stutzmann, Eléonore Observations of the seasonality of the Antarctic microseismic signal, and its association to sea ice variability |
topic_facet |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience Seismic noise spectra at all seismic stations display two peaks in the 1-20 s period band, called primary and secondary microseisms. They are caused by the coupling of ocean waves into Rayleigh waves. At most locations, microseismic power is greater during local winter (when nearby oceans are stormier) than local summer. This tendency is reversed for stations in Antarctica, where growth of local winter sea ice seems to impede microseism generation in near coastal areas. A decade of continuous data from coastal seismic stations in Antarctica show systematic seasonality in microseismic signal levels, and demonstrate associations with both broad‐ scale and local sea‐ice conditions. Primary microseisms are known to be generated at the coast and the modulation that we observe can be associated with sea‐ice variations both in the vicinity of the station and along other Antarctic coasts. The similar modulation of short‐period secondary microseisms corroborates their mostly near‐coastal origin, while the con- tinued presence of long‐period secondary microseisms sug- gests more distant source regions. These observations could be used to extend the monitoring of climate variability prior to the availability of satellite‐derived climate indicators. |
author2 |
Géophysique expérimentale (IPGS) (IPGS-GE) Institut de physique du globe de Strasbourg (IPGS) Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Sismologie (IPGS) (IPGS-Sismologie) Institut de Physique du Globe de Paris (IPGP) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Institut de Physique du Globe de Paris (IPG Paris)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Grob, Mélanie Maggi, Alessia Stutzmann, Eléonore |
author_facet |
Grob, Mélanie Maggi, Alessia Stutzmann, Eléonore |
author_sort |
Grob, Mélanie |
title |
Observations of the seasonality of the Antarctic microseismic signal, and its association to sea ice variability |
title_short |
Observations of the seasonality of the Antarctic microseismic signal, and its association to sea ice variability |
title_full |
Observations of the seasonality of the Antarctic microseismic signal, and its association to sea ice variability |
title_fullStr |
Observations of the seasonality of the Antarctic microseismic signal, and its association to sea ice variability |
title_full_unstemmed |
Observations of the seasonality of the Antarctic microseismic signal, and its association to sea ice variability |
title_sort |
observations of the seasonality of the antarctic microseismic signal, and its association to sea ice variability |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-00679388 https://hal.science/hal-00679388/document https://hal.science/hal-00679388/file/2011GL047525-pip.pdf https://doi.org/10.1029/2011GL047525 |
genre |
Antarc* Antarctic Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Sea ice |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-00679388 Geophysical Research Letters, 2011, 38, pp.L11302. ⟨10.1029/2011GL047525⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2011GL047525 hal-00679388 https://hal.science/hal-00679388 https://hal.science/hal-00679388/document https://hal.science/hal-00679388/file/2011GL047525-pip.pdf doi:10.1029/2011GL047525 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2011GL047525 |
container_title |
Geophysical Research Letters |
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38 |
container_issue |
11 |
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1810493648742121472 |